Trainer Bob Baffert, winner of four Kentucky Derbies at his stable at Churchill Downs in Louisville, Kentucky.Carina Mia, trained by Bill Mott, gallops in preparation for the Kentucky Oaks at Churchill Downs in Louisville, Kentucky.Dazzling Gem, trained by Brad Cox, gallops in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Destin, trained by Todd Pletcher, chews on his feed tub after completing morning exercise in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Destin, trained by Todd Pletcher, gallops in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Destin, trained by Todd Pletcher, yawns in his stall after completing morning exercise in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Dothraki Queen, trained by Ken McPeek, gallops in preparation for the Kentucky Oaks at Churchill Downs in Louisville, Kentucky.Exaggerator, trained by Keith Desormeaux, walks shedrow in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Fellowship, trained by Mark Casse, gallops in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Racing Hall of Fame rider Gary Stevens awaits his Kentucky Derby horse, Mor Spirit, trained by Bob Baffert,Go Maggie Go, trained by Dale Romans, gallops in preparation for the Kentucky Oaks at Churchill Downs in Louisville, Kentucky.Gun Runner, trained by Steve Asmussen, gallops in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Trainer Gustavo Delgado, with his Kentucky Derby entrant's training saddlecloth at Churchill Downs in Louisville, Kentucky.Land Over Sea, trained by Doug O'Neill, gallops in preparation for the Kentucky Oaks at Churchill Downs in Louisville, Kentucky.Lewis Bay, trained by Chad Brown, gallops in preparation for the Kentucky Oaks at Churchill Downs in Louisville, Kentucky.Mohaymen, trained by Kiaran McLaughlin, is groomed after completing morning exercise in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Mohaymen, trained by Kiaran McLaughlin, is groomed after completing morning exercise in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Mohaymen, trained by Kiaran McLaughlin, snacks on some grass after completing morning exercise in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.Mohaymen, trained by Kiaran McLaughlin, snacks on some grass after completing morning exercise in preparation for the Kentucky Derby at Churchill Downs in Louisville, Kentucky.